These are the prices on fitness trackers I'm seeing in Black Friday sales. Garmin, Fitbit, Apple, Pixel, and more make the list.

The Oura Ring 4 is a top seller among readers for several reasons. Though it's one of the most expensive smart rings with a pesky $70 annual subscription, it excels at its core functions and is ...

With the new Grit X2, Polar continues to refine its tools for training, coaching, and performance improvement.